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Articles tagged with #cryptography
Summary The challenge provides four files (Brunner1.jpg, Brunner2.gif, Brunner3.png, Brunner4.bmp) that all report as generic data under file - none of them start with the magic bytes their extension
# Challenge Category Flag 1 B1t Recovery Crypto THM{[REDACTED]} 2 Lost Fortune Included Web THM{REDACTED} 3 Casino Heist Forensics THM{REDACTED} 4 Fresh Powder - Bonus Challenge Detection Eng
Challenge A single file, aha.txt, containing nothing but space-separated 8-letter "words" made up of only two characters: A and H. $ cat aha.txt AHHAAAHA AHHHAAHA AHHAHHHH AHHAHHHA AHHAAAHH AHHAHHHH A
Challenge We're given secret.txt, a single line of comma-separated tuples wrapped in what looks like braces and underscores: (4, 17), (2, 16), (2, 15), (4, 9), { , (3, 2, 1), (5, 3), _ , (2, 17), ...
Summary pscheme.py implements a toy "encryption" scheme that encodes each 4-byte chunk of the flag as extra roots multiplied directly into a public polynomial. Because the polynomial multiplication is
